JEE Advanced 2019 Physics question

A mixture of ideal gas containing 5 moles of monatomic gas and 1 mole of rigid diatomic gas is initially at pressure , volume , and temperature . If the gas mixture is adiabatically compressed to a volume , then the correct statement(s) is/are, (Given ; ; is gas constant)

• (A)The work done during the process is Correct
• (B)The average kinetic energy of the gas mixture after compression is in between and
• (C)The final pressure of the gas mixture after compression is in between and Correct
• (D)Adiabatic constant of the gas mixture is 1.6Correct